Disk-supporting arm.



H. BROCKMEYER.

DISK SUPPORTING ARM.

APPLICATION FILED 1120.27, 1911.

Pateted Aug. 13, 1912.

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DISK SUPPORTING ARM.

APPLICATION FILED 11111127.1911.

1,035,776, Patented Aug. 13,1912.

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H. BROGKMBYER.

DISK SUPPORTING ARM.

APPLICATION FILED Dnc. 27, 1911.

1,035,776. Patented Aug. 13,1912.

3 SHEETS-SHEET 3.

UNTTED STATES PATENT OFFICE.

HENRY BROCKMEYER, OF IRVING, KANSAS.

DISK-SUPPORTING- ARM.

To all whom t may concern.'

Be it known that I, HENRY Bnookirnrnn, a citizen of the United States,residing at Irving, in the county of Marshall and State of Kansas, haveinvented new and useful Improvements in Disk-Supporting Arms, of whichthe following is a specification.

The invention relates to supporting arms, and more particularly to theclass of disk supporting arms for cultivators or the like.

The primary object of the invention is the provision of a support-ingarm of this character' in which the disk may be angularly adjusted andthe arm removed from the cultivator frame, when desired, the arm beingcapable of adjustment, and may be securely fastened to such eultivatorframe.

Another object of the invention is the provision of an arm of thischaracter in which the cultivator disks may be set level and all havethe same angle to the dirt, and also that will permit the setting of thedisks to throw dirt away from the growing plants or up to the same, asmay be required.

A further object of the invention is the provision of a supporting armwhich is simple in construction, and that may be mounted upon varyingsized cultivators, without altering the parts thereof or reconstructingthe same, the arm being strong, durable, and inexpensive in manufacture.

lith these and other objects in view, the invention consists in theconstruction, combination and arrangement of parts, as will behereinafter' more fully described, illustrated in the accompanyingdrawings, and pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a top plan view of a wheeled cultivator,showing the disk support-ing arm constructed in accordance with theinvention applied thereto. Fig. 2 is an enlarged side elevation of oneof the disk supporting arms. Fig. 3 is an enlarged vertical longitudinalsectional view through the same. Fig. 4 is an end elevation of the armwith the disk removed. Fig. 5 is a similar view, looking toward theopposite end. Fig. 6 is a plan View of the clutch surface on one sectionof the arm. Fig. 7 is a similar View of the clutch surface on the othersection of the arm. Fig. 8 is a sectional view on the line 8 8 of Fig.2. Fig. 9 is a side elevation of a slightly modified form of disksupporting arm. Fig. 10 is a vertical longitudinal sectional viewthrough the same. Fig. 11 is a sectional View on the line 11 of Fig. 9.Fig. 12 is a side elevation Specification of Letters Patent.

Application led December 27, 1911.

Patented Aug. 13, 1912.

Serial No. 668,075.

of a further modification of the disk supporting arm. Fig. 13 is alongitudinal sectional view theretln'ough. Fig. 14 is an end elevationof the arm. Fig. 15 is an end elevation of one section of the arm,showing the clutch surface thereon. Fig. 16 is an end elevation of theother section of the arm, showing the clutch surface. Fig. 17 is asectional view on the line m-:c of Fig. 14. Fig. 18 is an end view ofthe arm showing the clutch surface thereon. Fig. 19 is a similar view ofthe companion clutch surface for engagement therewith.

Similar reference characters indicate correspomling parts throughout theseveral views of the drawings.

Referring to the drawings by numerals, the cultivator comprises arectangular frame 10, secured at its forward end to a tongue 11, wherebythe machine is drawn forwardly, the rear end of the tongue beingprovided with a right. angular plate 12, to which the rear end of theframe is sccured. Secured to the opposite sides of the frame is a pairof hangers 13 which are provided with bearings 14 for the reception oftwo rocking bars 15 and 16, respectively.

Adj ustably secured to the bar 15 is a pair of beams 17, the samecarrying the usual shovels 1S. Each of the bars 15 and 16 is of squaredformation in cross section throughout its length, and to the bar 16 isadapted to be connected the disk supporting arm, presently described.

larried by the frame 10 is a substantially U-shaped crank axle 19, onthe spindle ends 20 of which are mounted the usual ground wheels 21 forthe supporting of the frame and permitting the travel thereof over theground.

Each of the disk supporting arms comprises a casting forming a limb 22,the same being slightly downwardly arched to give the proper ciilrvaturethereto, and formed in the upper edge thereof, intermediate its ends, isa recess 23, the limb 22 being formed with a longitudinal bore 24intersecting the said recess 23, the said bore at the inner end of thelimb 22 opening into a pocket 25, in which is slidably fitted a forkedblock 26, the same being formed with a stem or rod extension 27 passedthrough the bore and protruding in the recess 23, the protruded end ofthe stem or rod extension being provided with a right hand thread 28which is engaged by a turn-buckle 29. Slidably fitted in the boreopening through the outer end of the limb 22 is a stem or rod extension30, the inner end of which is provided with a left hand thread 31engaging the turn buckle 29, which latter is located within the recess23 in the limb.

Formed on the outer end of the limb concent-rically about the boretherein, is a clutch surface 32 which is designed to engage with asimilar clutch surface 33 formed on the inner end of an adjustablesleeve or cap section 34, in which is mounted a slidable forked block 35formed on the outer end of the stem or rod extension 30, the sleeve orcap 34 being formed with a groove 36, the inner face of which isprovided with a plurality of parallel clamping ribs 37, and in thisgroove 36 is disposed a spool-like turning knuckle 3S,the same beingrotatably journaled upon a bolt member 39 engaged in the forked end ofthe slidable block, the said turning knuckle being formed with aplurality of clamping ribs 40 on its outer surface to engage with theclamping ribs 37 formed in the groove 36, so that the knuckle may belocked against rotation on the bolt member, in a manner presentlydescribed.

Fixed medially in the knuckle 3S and projecting outwardly at rightangles thereto is a disk supporting spindlel 41, on which is journaled aground working disk 42 of the usual type, the spindle 41 being providedwith an adjustable dirt guard collar 43, as usual. It is evident thatthe spindle 41 may be angularly adjusted on the turning of the knuckle38 in the forked block 35 for the proper positioning of the groundworking disk 42 journaled upon the spindle.

Fixed in the fork of the slidable block 26 mounted in the inner end ofthe limb 22 is a clamping block 44, the same being formed in its innerface wit-h a V-shaped notch 45, .and likewise the inner end of the limb22 is formed with a V-shaped notch 46 registering with the said notch45, and in these notches is engaged the rocker bar 16 mounted in thehangers depending from the frame of the cultivator. Thus, it will beseen that the disk supporting arm may be readily fastened to the rockerbar on the cultivator frame, the clamping block 44 being secured in thefork of the slidablc bloc-k 26 by means of a detachable bolt member 47passed through the fork and the said clamping block', as will beobvious.

The adjustable sleeve or cap 34 is cut away at its opposite sides toprovide notches 48 which permit the spindle 41 to be swung to eitherside of the disk supporting arm and at right angles thereto, should itbe desired.

For adjustably securing the cap or sleeve 34 to the outer end of thelimb 22 and also clamping the latter to the rocker bar 16, it is onlynecessary to turn the turnbuckle 29 in one direction, which moves thestems or rod extensions 27 and 30 toward each other, so that theclamping block 44 will bind against the rocker bar 16, and the clutchsurfaces 32 and 33 on the limb 22 and adju-stable cap or sleeve 34,respectively, will lock with each other. Also the knuckle 38 will bemoved, so that the clamping ribs 40 thereon will engage the clampingribs 37 in the groove 36 in the cap or sleeve 34, thus locking thespindle 41 in adjusted position for sustaining the disk 42 journaledupon the spindle 41 in proper angular disposition for the working of theground on the advancement of the cultivator.

In Figs. 9, 10 and 11, there is shown a slight modification of disksupporting arm, wherein the limb 49 has passed through thelongitudinal-bore 50 therein the stems or rods 51 and 52, the inner endsof which are formed with right and left hand threads 53 and 54 whichengage in a turn-buckle 55, the stem 51 being formed with a slidableforked block 56 which tits in the pocket 57 in the inner end of the limb49, in t-he fork of which is detachably fixed a clamping block 58, thelatter and the inner end of the limb being notched for receiving therocker bar 16, whereby the limb may be securely clamped thereto. Nearthe outer end of the stem or rod 52 are formed opposed fla-t faces 59which are intersected by an elongated slot 60 provided in the said stemor rod 52, through which is passed a tapering tubular extension 61formed on one part 62 of a turning knuckle, the other part 63 thereofbeing provided vwith a tapering bore receiving the said tubularextension 61, the said parts of the turning knuckle being disposed onopposite sides of the attened portion of the stem or rod 52. Passedthrough the parts '62 and 63 and the tubular extension 61 is a fasteningmember 64, t-he same engaging -a disk carrying spindle 65 which has itsinner end engaged in a loop portion 66 of the said fastener, and carriedupon the said spindle is the usual ground working disk 67, the inner endof the spindle 65 being engaged in diametrically opposed notches 68formed in the part 62, so as to prevent the turning of the spindlerelative to the knuckle. Slidably fitted on the stem 52 and disposed atopposite sides of the turning knuckle are clutch blocks 69 and 70,respectively, the inner or meeting faces of which are formed withalining grooves 71 receiving the turning knuckle, the said grooves beingformed with a plurality of clamping ribs 72 which are adapted to engageor lock with similar clamping ribs 73 formed on the outer surfaces ofthe parts 62 and 63 of the turning knuckle. Detachf ably threaded on theouter end of the stem 52 is a nut 74, against which is engaged theclutch block while the clutch block 69 on its inner face is formed witha clutch surface 75, the latter being adapted for locking engagementwith the clutch surface 76 formed on the outer end of the limb 49. Thusit will be seen that the limb may be readily fastened to the rocker bar16, and also the spindle supporting and ground working disks may besustained in anglilarly adjusted position, the adjustment thereof beingpermitted by the turn-buckle, as will be obvious.

In Figs. 12 to 17, there is shown a further modification of the disksupporting arm, comprising a limb 77 which is slightly downwardly archedto give the proper eurvature thereto, and has formed in the upper edgethereof, intermediate its ends, a recess 78, the said limb beingformedwith a longitudinal bore 79 intersecting the recess 78, the said bore,at the inner end of the limb, opening into a pocket 80, in which isslidably fitted a forked block, 81, the same being formed with a stem orrod extension 82 passed through the bore and protruding into the recess78, the protruded end of the stein or rod extension being provided witha right hand thread which is engaged by a turn-buckle 83. Slidablyfitted inthe bore 79 opening through the outer end of the limb 77 is astem or rod extension 84, the inner end of which is provided with a lefthand thread engaging the turn-buckle 83, while its outer end is fixed inor integral with a fork 85, the inner portion of which is surrounded bymeans of a block 86, the inner face thereof being formed with a ratchetsurface 87 engaging witha corresponding ratchet surface 88 formed on theouter end of the limb 77, the clutch surfaces being designed to engagewith each other for locking the block 86 in adjusted position relativeto the limb. Carried by the fork 85 and secured thereto by means of abolt member 89 is a clamping block 90, the adjacent or meeting faces ofthe blocks 86 and 90 being provided with alining ratchet faced grooves91 receivino a spool-like turning knuckle 92, the same eing formed witha ratchet surface 93 adapted for engagement with the ratchet surface 91of the grooves in the blocks 86 and 90 for locking the turning knucklein adjusted position, this being accomplished by turning the buckle 83for the drawing of the rods or stem extensions 82 and 84 toward eachother. The turning knuckle 92 is formed with a longitudinal bore 94, inwhich is fitted an eye bolt 95, the eye 96 of which receives the diskspindle 97, the stem being provided at its threaded end with a nut 98for the tightening of the bolt in the turning knuckle, whereby thespindle 97 will be held fast therewith. One end of the spoollike knuckleis provided with a channel 99 receiving the spindle 97, so as to preventthe turning thereof relative to the knuckle when said spindle isfastened thereto. In the forked block 80 is xed a clamping block 100,the same being formed in its inner face with a V-shaped notch 101, andlikewise the inner end of the limb 77 is formed with a V-shaped notch102 registering with the notch 101, and in these notches is engaged therocking bar 16 mounted in the hangers depending from the frame of thecultivator. Thus it will be seen that the supporting arm may be fastenedto the rocking bar on the cultivator frame.

From the foregoing, taken in connection with the accompanying drawings,it is thought that the construction and operation of the invention willbe readily understood, without requiring a more extended explanation.

That is claimed is:

1. The combination with a cultivator having a rocker bar, of a pluralityof disk supporting arms, each comprising a limb having a recessintermediate its ends, stems slidable in the limb and intersecting therecess and having forked extremities, a turn buckle adjustably engagingthe stems for connecting the same, a disk journal having a turningknuckle mounted in one of the forked extremities, a disk rotatable uponsaid journal, and clamping means carried by the other forked extremityand engaging the rocker bar.

2. The combination with a cultivator having a rocker bar, of a pluralityof disk supporting arms, each comprising a limb having a recessintermediate its ends, stems slidable in the limb and intersecting therecess and having forked extremities, a turn buckle adjustably engagingthe stems forconnecting the same, a disk journal having a turningknuckle mounted in one of the forked extremities, a disk rotatable uponsaid journal, and clamping means carried by the other forked extremityand engaging the rocker bar, an adjustable cap carried by one of thestems and having means engageable with the limb at its outer end forlocking said cap against rotation, and coperative locking projectionsformed on the cap and the turning knuckle to prevent displacement of thelatter.

In testimony whereof I aliix my signature in presence of two Witnesses.

HENRY BROCKMEYER.

Witnesses:

DANIEL I-I. ARMSTRONG, ANDREW J. Zemin.

Copies of this patent may bc obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

